Flow — an open-source photo editor for Android with 269 3D LUTs and tone curves

⚡ The gist in 5 seconds - The jaivedpereira/flow project is an open-source photo editor for Android featuring 269 real 3D LUT cubes and 13 GrainRad-style effects. - Included: selective HSL, tone curves, masks, text and stickers, and batch export. - Access condition: the source code and build are available in the GitHub repository; no account or cloud required. ### 🔍 What was found On GitHub, the jaivedpereira/flow project has been published — an open-source photo editor for Android. The advertised toolset includes: 269 genuine 3D LUT cubes (that is, color-correction tables in cube format, not "preset filters"), 13 GrainRad-style effects, selective HSL, tone curves, masks, text and sticker support, as well as batch export. It is specifically emphasized: no account, no cloud. The toolset mechanics are typical of serious editors: a 3D LUT is applied to a frame as a volumetric color transformation table, selective HSL adjusts individual color ranges (for example, only the blue tones of the sky), tone curves control luminance per channel, and masks limit an effect's action to a specific area of the photo. Batch export lets you run a series of frames through a single set of edits. ### 💡 Why it matters Mobile color grading has long operated on a subscription model tied to an account and cloud sync — Flow offers the opposite approach: local processing, open source code, and full-fledged LUT cubes instead of paid presets. For geeks, it's also a chance to see how HSL, curves, and masks are implemented, and to build the editor to suit their own needs.